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- W1984806005 abstract "After completion of the Arabidopsis genome-sequencing programme, crown galls induced by Agrobacterium tumefaciens may become a model system to study plant tumour development. The molecular mechanisms of nutrient supply to support tumour growth and development are still unknown. In this study, we have identified a unique profile of Shaker-like potassium channels in agrobacteria-induced Arabidopsis tumours. Comparing the gene expression pattern of rapidly growing tumours with that of non-infected tissues, we found the suppression of shoot in favour of root-specific K+ channels. Among these, the upregulation of AKT1 and AtKC1 and the suppression of AKT2/3 and GORK were most pronounced. As a consequence, K+ uptake and accumulation were elevated in the tumour (163 mm) compared to control tissues (92 mm). Patch clamp studies on tumour protoplasts identified a population expressing the electrical properties of the AKT1 K+ channel. Furthermore, plants lacking a functional AKT1 or the AKT2/3 phloem K+ channel gene did not support tumour growth. This indicates that the delivery of potassium by AKT1 and the direction of assimilates, triggered by AKT2/3, are essential for tumour growth." @default.
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- W1984806005 date "2003-06-01" @default.
- W1984806005 modified "2023-10-16" @default.
- W1984806005 title "Tumour development in <i>Arabidopsis thaliana</i> involves the <i>Shaker</i>‐like K<sup>+</sup> channels AKT1 and AKT2/3" @default.
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- W1984806005 doi "https://doi.org/10.1046/j.1365-313x.2003.01766.x" @default.
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